UTM9 L2TP VPN no connection to internal LAN

Question

Hello Guys 
 I have a problem with the l2tp VPN on my UTM9 Firewall. 
 I activated the l2tp vpn Option, and for the IP's i have chosen the l2tp vpn pool. 
 I also made a Firewall Rule which allows my VPN User Network to have acces to mit LAN Interface for Services i chose "ANY". 
 I'm able to connect to the VPN but i don't have access to any devices which are connected to the LAN Port. I have two ESXI Servers which i can manage when i'm connected with an ethernet cable to INTERNAL but over VPN nothing works. 
 I also made a NAT Masquarading Rule from my vpn pool to external and from my vpn tool to Internal. 
 I found in this Forum similar problems and tried solutions like, creating a firewall rule which also allows the connection from Internal to my vpn user Network. 
 I don't have a clue what i should try next, i would be very happy if someone could help me with this Problem.

BAlfson · Answer

Hallo Luca and welcome to the UTM Community! 
 "WAN (Network)" is only the subnet defined on the WAN interface. I suspect that you want "Internet IPv4" instead. 
 You don't want the masquerading rule 'VPN Pool (L2TP) -> Internal' as that can cause problems that are difficult to figure out. 
 Also, in UTM creating a "root" user name can lead to confusion. You will want to use a name that can't be confused with the root user at the command line. 
 Cheers - Bob